138 THE PLANTS 



are known ; Caulerpa prolifera occurs plentifully in 

 the Mediterranean ; three species on the coast of New 

 Zealand ; and five or six species along the coast of 

 Japan, in the warm waters of the Kuro Shiwo, the 

 " Gulf Stream " of the Pacific. 



FIG. 51. HALIMEDA ("BLAKE"). 



To the Phseophyeeae belong the Phaeosporae, the 

 Dictyotaceae, and the Fucaceae. The Phaeosporae have 

 conjugating and non-conjugating motile spores, all 

 moving about by the aid of two cilia. To this group 

 belong the greater number of brown "algae : the slender 

 filamentous Ectocarpus family, of which many members 



